Lamp guard construction



Aug. 10, 1954 J. D. KEVORKIAN LAMP GUARD CONSTRUCTION Filed March 11,1952 INVENTOR ooszvu D- KENORKIDN ATTORNEY Patented Aug. 10, 1954 attestA'EENT OFFICE 4 Claims.

This invention relates generally to lamp guards and is more particularlyconcerned with an improved construction of lamp guard of the type havingseparable reflector and wire guard members.

Among the principal objects of the present invention is to provide alamp guard of the type having separable reflector and wire guard membersfor a lamp to be protectively enclosed therebetween with improved meansfor facilitating assembly and disassembly of the members as may berequired in connection with initial assembly of the lamp guard and thereplacement of damaged parts.

Another object of the present invention is to provide such a lamp guardwith means devoid of threaded elements but adapted to normally securethe reflector and wire guard members together for quick completeseparation thereof to facilitate initial assembly of the lamp guard and.replacement of damaged parts.

Other objects and advantages of the invention will appear more fullyhereinafter, it being understood that the present invention consistssubstantially in the combination, construction, location and relativearrangement of parts, as more fully described hereinafter, as shown inthe accompanying drawings and as finally pointed out in the appendedclaims.

In the accompanying drawings, which are illustrative of a preferredconstruction of lamp guard mbodying the principles of the presentinvention:

Figure 1 is a perspective view of the guard in its assembled form;

Figure 2 is a side elevational view thereof;

Figure 3 is similar to Figure 1 but shows the guard partially assembledor disassembled;

Figure 4 is a front elevational view of the guard;

- more 5 a bottom view of the guard.

Rererring now to the drawings, it will be observed that the lamp guardof the present invention essentially consists of a reflector part issuitably cut and stamped of sheet metal, a wire gua d part l formed ofwire rod elements which are bent welded together to form an open framewhich mates with the reflector part it) to provide a protectiveenclosure for a lamp (not shown), and a clamping member l2 for-med of awire rod element and disposed proximate the base of the lamp guard.

The sheet metal reflector it is formed to provide a central orintermediate body portion i3 of substantially semicylindricalshape intransverse cross section, the opposite end portions 14 and i5 ofreflector part so being correspondingly concaved, as shown, to providemaximum light reflecting efficiency for the unit. The lower concavedpart [4 of the reflector part It is axially extended to provide a collarmember is of semicylindrical shape, the opposite extremities of whichare respectively provided with outwardly projecting coplanar lugs !lll,each having a hole l8 therein for a purpose to be described hereinafter.

To reinforce and strengthen the sheet metal reflector part It, it isprovided with a pair of circumferentially extending ribs iii-49, whichare arranged in axially spaced, parallel relation, it being noted thatthese ribs are each so embossed in the reflector shell as to projectinteriorly thereof and that the opposite ends of each rib respectivelyterminate short of the marginal edges 2l32il of the reflector shell.

The Wire guard part I l of the lamp guard unit is formed of a wire rodelement 2i reversely bent generally to the form of an S, a pair ofsimilar wire rod elements 22-22 each bent generally to the form of aninverted J and a second pair of similar wire rod elements 23-23 eachbent generally to the form of a C, all of these elements being suitablysecured together, as shown, as by spot-welding at the points 2 3, toprovide a rigid open frame of a shape which generally conforms and iscomplementary to that of the reflector part H3.

The vertically extending portions iii-.25 of the wire rod elements 2222are symmetrically disposed to either side of the vertically extendingportion 26 of the element 2!, while the transverse circular elements23-23, which hold the portions 2-"'5 and 26 in circumferentiaily spacedrelation, are each of a length sufficient to present the opposite endsthereof just inside the marginal edges 262i of the reflector shell whenthe wire guard and the shell are asenibled as shown in Figure l. Thelower extr mities of the wire rod elements 2! and 22-22 are respectivelysecured, preferably by welding, to a collar member 2? of semicylindricalshape, the latter being provided with outwardly projecting coplanar lugsill-28, each having a hole 29 therein for a purpose to be describedhereinafter.

It will be noted that the transverse circular elements 23-23 are securedto the inner sides of the wire portions 2525 and are respectivelydisposed in circumferential continuation of the internal ribs i19i 9 ofthe reflector shell it. Thus, when the shell and wire guard areasembled, the

ribs iQ-i 9 and the circular elements 23-23 provide an axially spacedpair of internal strengthening ribs extending about the fullcircumference of the cylindrical portion of the assembled unit.

For detachably securing together the upper ends of the reflector shelli0 and the guard ii. the central wire rod element 2| is provided with aportion 30 bent sharply, as at 3|, to project upwardly through anopening 32 suitably pro-= vided therefor in the top of the reflectorshell, which upwardly projecting portion 30 terminates in a supportinghook 33 for the lamp guard.

The clamping member I2 essentially consists of a U-shaped wire rodelement shaped to provide a pair of laterally spaced identical legs eachsharply bent, as at 34 and 38, to, form angularly related portions 3?and 31*, the leg portions 37-31 of the member l2 being respectivelyprovided with hooked ends 38-38 terminating in reversely turnedextremities 39-39. The portions Si -3'? are interconnected by atransversely extending curved bail portion 4| disposed in a plane oiTsetfrom that of the leg portions 3l-3'I.

Normally, the clamping member i2 is hingedly connected to the reflectorshell part of the lamp guard, the hooked ends 38-38 of said member beingpivotally joined to the apertured lugs of the reflector shell collar Itby projection of the reversely turned extremities 38-35 rearwardlythrough the openings iii-l8 in said lugs, as best shown in Figure 3.

When it is desired to operatively clamp the guard to the lamp socket(not shown), the collar part 21 of the wire frame H is swung intoengagement with the complemental collar part it of the reflector shellto present the apertured lugs of the one part in registry with the other(see Figures 1 and 2), simultaneously as the terminal extremities 39-39of the clamping member l2 are respectively projected through theopenings 29-29 of the collar part 21'. Thereupon, the clamping member isswung upwardly about its hooked ends hinged to the registered collarparts l6 and 2'! into position, as shown in Figures 1 and 2, wherein thetransversely extending portion 4! engages a retainer 42 formed as anintegral part of the central element 2| of the wire frame As theclamping member I2 is swung into its secured position, the terminalextremities 39-39 thereof act not only to cam the lugs 23-28 of thecollar part 27 into tight engagement with the lugs ll-i'! of the collarpart IE, but also to maintain the collar parts i6 and 21 in registered,clamping relation about the lamp socket to which the guard is secured.

When it is desired to replace a lamp, it is merely necessary to beardown on the transversely extending bail portion 4| of clamping memberl2. Initial downward swinging movement of the latter detaches the bailportion 4| from the retainer element 42, and further movement disposesthe hooks 38-38 and their reversely curved terminal extremities 39-39 insuch position that lugs 28-28 of the collar part 2! may be disengagedtherefrom, whereupon the wire guard part i may be swung outward fromreflector part- H], as shown in Figure 3. Thus, the collar members I6and 21 are unclamped from the lamp socket or holder (not shown),following which the lamp guard may be removed from the latter and thelamp replaced. By reversing the procedure just described, the lamp guardmay be again attached 4 to the lamp socket or holder, as will be readilunderstood.

When it is desired to completely separate the Wire guard part II fromthe reflector part [0, as when it is desired to replace a damaged part,this may be readily effected by proceeding from the condition of thelamp guard shown in Figure 3 to disengage the upper end portions 30 and33 of wire rod element 2|. from the opening 32 in the reflector part it.Ordinarily, however, the aforementioned end portions remain engaged inthe opening 52 to provide a hinged connection between the top ends ofthe reflector part l0 and the wire guard part H. In assembling the wireguard part I and the reflector part it, whether initially or otherwise,the reverse of the procedure just outlined is followed.

It. will be understood, of course, that the present invention issusceptible of various changes and modifications which may be made fromtime to time Without departing from the general principles or realspirit of the invention, and it is accordingly intended to claim thesame as indicated by the appended claims.

What is claimed as new and useful is:

1. In a lamp guard of the character described, complementally shapedreflection and guard parts disposed to form an enclosure for a lamp,means at the top of said lamp guard securing said parts together andaffording relative swinging movement thereof, collars at the base ofsaid parts together forming an annular member, the terminal portions ofeach of said collars being turned outward for disposition in abuttingrelation to those of the other collar, a single wire element ofgenerally U-shape disposed with opposite side portions respectivelystraddling said annular member and disposed in lower abutting relationwith respect to abutting terminal portions of said collars, said sideportions respectively terminating in rearwardly and upwardly turnedhooks for projection back through alined openings in said abuttingterminal portions, the transversely extending portion of said U-shapedelement being disposed to engage a keeper element formed on said guardpart for preventing said swinging movement and for clamping said collarstogether to form said annular member for embracing the lamp socket orholder.

2. In a lamp guard as defined in claim 1 wherein each of the collars isof semicircular form and wherein the outwardly turned terminal portionsthereof are disposed in coplanar relation.

3. In a lamp guard of the character desc bed, complementally shapedreflection and guard. paras disposed to form an enclosure for a lamp,means at the top of said lamp guard for securing lid parts together andaffording rele -i ng movement thereof, a pair of aperturezi elements foreach of said parts disposed ectively on opposite sides of the part andextenchg outwardly in opposite directions, iron. the base of the guardeach in side abutting relation to an apertured element of the otherpart. a single wire element of generally U-shape disposed in straddlingrelation to said base and with it. posite end portions each extendingunder abutting apertured elements on one side of said base andterminating in a rearwardly and upwardly turned hook for projection backthrough the apertures in the abutting elements, the transverselyextending portion of said U-shaped element being disposed to engage akeeper element form d on said guard part for preventing said swingingmovement and for clamping said base about the lamp socket or holder.

4. In a lamp guard of the character described, complementally shapedreflector and wire guard main body parts disposed to form an enclosurefor a lamp, means at the top of said lamp guard for hingedly securingsaid main body parts together for relative swinging movement thereof, apair of complemental semi-circular collars respectively disposed at thebottom ends of said main body parts to conjointly form an annular basemember for the lamp guard, each of said semi-circular collars having apair of oppositely projecting apertured elements, said semi-circularcollars being adapted for disposition about a lamp socket or the likewith corresponding apertured elements thereof in registry, a single wirebail element of generally U-shape disposed in straddling relation tosaid annular base, the opposite end portions of said wire bail beingrespectively provided with hooks turned toward the transverselyextending portion of said wire bail each projected through a registeringpair of said apertured elements, the transversely ex tending portion ofsaid wire bail being swingable relatively to said annular base and beingpositioned to engage said wire guard part at a point located above itscollar whereby to effectively clamp together the semi-circular collarsof both main body parts, and a detent for releasably securing said wirebail element in locked engagement with said wire guard part.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,315,494 Heinrich Sept. 9, 1919 2,178,907 Hockley Nov. '7,1939 2,258,032 Popp Oct. 9, 1941 2,265,830 Woodhead Dec. 9, 19412,580,359 Moineau Dec. 25, 1951 2,626,347 Baenziger Jan. 20, 19532,659,810 Fineman Nov. 17, 1953

